CT Registered Agent.org takes the top spot because a $199 formation price over the state fee, then $99 a year for the agent.
The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.
Its published prices leave out the annual report, so the owner files it with Connecticut every year.
It costs less than Mainstay Filing over three years, and cost is one of our two heaviest criteria.
In the price
- The formation filing
- Year one as your registered agent
Good
- Files the LLC for $199 and the state fee
- The registered agent role is free for the first year
- An agent price of $99 from year two
Watch for
- Leaves the annual report to the owner
- The EIN application is an extra charge ($99)
Connecticut Registered Agent.co makes the list at number two because a $199 formation price over the state fee, then $99 a year for the agent.
The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.
Its published prices leave out the annual report, so the owner files it with Connecticut every year.
We found no difference in price or features between CT Registered Agent.org and Connecticut Registered Agent.co; choose whichever you prefer.
In the price
- The formation filing
- Year one as your registered agent
Good
- $199 for the formation, state fee extra
- The registered agent role is free for the first year
- $99 yearly for the agent in year two
Watch for
- Leaves the annual report to the owner
- The EIN application is an extra charge ($99)
Mainstay Filing makes the list at number three because $199 a year pays for the Connecticut filing, a year as your registered agent and the annual report, and the renewal is $199.
Renewal includes Mainstay filing the annual report on your behalf. The state fee in Connecticut is $80 every year, due on or before March 31, and Mainstay passes that fee through at cost.
CT Registered Agent.org undercuts it by $200 across three years, which leaves Mainstay Filing second on cost.
In the price
- The formation filing, submitted on your behalf
- Your registered agent for the full year
- Your annual report, prepared and filed for you
- EIN application handled
Good
- A single $199 yearly price that covers the annual report
- Connecticut's fee is added at cost
- Renews at $199 with no add-ons
- EIN application is part of the package
Watch for
- The agent part costs $100 a year more than CT Registered Agent.org's after year one
The 3 picks side by side
Each number out of 10 is our own mark, drawn from the weighted criteria on How we rank, and not a customer rating.
Connecticut LLC service pricing in 2026: first year, renewals, three-year total
Every price comes from the company's own pages as of November 12, 2026. The $120 Connecticut filing fee comes on top of each row and is left out of the totals.
How the order came together
Filing Shortlist puts 28% of the weight on three-year price and 28% on what the price covers. The remaining 44% goes to renewal terms, fit for the state and price clarity, and for Connecticut the deciding factor was three-year price.
CT Registered Agent.org adds up to $397 over three years, which is $200 below Mainstay Filing. Mainstay would file the annual report too, but an owner can do that alone for the state fee, so the smaller price won this page.
Every criterion and weight is set out on How we rank.
Forming in Connecticut: filing fee and form
The Certificate of Organization costs $120 to file with the Connecticut Secretary of State. Each service here adds that fee at cost to its own price.
The state's usual processing time: Most online filings automatically accepted.
Keeping the company in good order in Connecticut after formation
File the annual report every year, by on or before March 31. The state fee is $80. Every LLC must name a registered agent with an in-state street address.
Common questions about Connecticut LLC services
What is the price of starting an LLC in Connecticut?
The state filing fee is $120, and service fees run $199.
Which document creates the LLC?
The Certificate of Organization, submitted to the Connecticut Secretary of State.
What is the state's turnaround for a new Connecticut LLC?
The state quotes Most online filings automatically accepted as its standard processing time.
Must a new company list a registered agent when it forms in Connecticut?
Yes. Connecticut wants a registered agent named at formation and kept on file afterwards, with a street address in the state.
What does the company have to file after forming in Connecticut?
The annual report, every year, due on or before March 31, for a $80 state fee.
Is the EIN application part of the price?
With Mainstay Filing it is, inside the yearly price. For the EIN application, CT Registered Agent.org and Connecticut Registered Agent.co bill $99. The IRS issues EINs at no charge if you apply yourself.
Which service tops the Connecticut LLC shortlist?
CT Registered Agent.org, because forming in Connecticut costs $199 plus the state fee, and year-one registered agent service is covered, then $99 a year.
Where the figures come from
- Connecticut Secretary of the State, Business Services Division (checked again August 2026)
- Connecticut Secretary of the State, Business Services Division (checked again August 2026)
- Connecticut yearly filing: Annual report: fee, official source (checked again October 2026)
- Connecticut report due date (checked again August 2026)
- Connecticut formation fee: Filing fee, official source (checked again October 2026)
- Connecticut formation fee: Filing fee, official source (checked again October 2026)
- Processing and expedite, official source (checked again October 2026)
- Pulled from CT Registered Agent.org: pricing and service pages, November 12, 2026
- Pulled from Connecticut Registered Agent.co: pricing and service pages, November 12, 2026
- Pulled from Mainstay Filing: Connecticut service page, November 12, 2026